John E. Schwartz

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Billings, MT, US

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Patents Grantslast 30 patents

Information Patent Grant
Safety vessel and valve assembly
- Patent number 5,465,753
- Issue date Nov 14, 1995
- John E. Schwartz
- B61 - RAILWAYS
Information Patent Grant
Fluid transport apparatus with water hammer eliminator system
- Patent number 5,303,843
- Issue date Apr 19, 1994
- Montana Sulphur & Chemical Co.
- Donald L. Zink
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Internal valve
- Patent number 5,280,874
- Issue date Jan 25, 1994
- Montana Sulphur & Chemical Co.
- Donald L. Zink
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Fluid containment vessel with one or more recessed wells
- Patent number 5,222,517
- Issue date Jun 29, 1993
- Montana Sulphur & Chemical Co.
- Donald L. Zink
- B61 - RAILWAYS
Information Patent Grant
Safety pressure relief valve shut-off
- Patent number 5,113,893
- Issue date May 19, 1992
- John E. Schwartz
- B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...
Information Patent Grant
Valve apparatus
- Patent number 4,872,640
- Issue date Oct 10, 1989
- John E. Schwartz
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS